Development of an approximate method for quantum optical models and their pseudo-Hermicity

Details Development of an approximate method for quantum optical models and their pseudo-Hermicity Development of an approximate method for quantum optical models and their pseudo-Hermicity

2005-10-28

arxiv.org/abs/quant-ph/0510219v1

Czechoslovak Journal of Physics, 55 (2005) 9 1135-1140.

Physics

Quantum Physics

Paper prepared fo the "3rd International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics" June 2005 Istanbul. To

Scientific paper

10.1007/s10582-005-0118-7

An approximate method is suggested to obtain analytical expressions for the eigenvalues and eigenfunctions of the some quantum optical models. The method is based on the Lie-type transformation of the Hamiltonians. In a particular case it is demonstrated that $E\times \epsilon $ Jahn-Teller Hamiltonian can easily be solved within the framework of the suggested approximation. The method presented here is conceptually simple and can easily be extended to the other quantum optical models. We also show that for a purely imaginary coupling the $E\times \epsilon $ Hamiltonian becomes non-Hermitian but $P\sigma _{0}$-symmetric. Possible generalization of this approach is outlined.

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